La/γ-Al_2O_3催化剂的改性及其催化还原脱硫活性研究

Research on La/γ-Al_2O_3 Catalyst Modification and its Catalytic Reduction Desulfurization Activity

设计了一套模拟烟气催化还原脱硫实验装置。采用分步浸渍法,用Ce、Fe和Ti对La/γ-Al2O3催化剂进行改性,实验对比分析了在不同的反应温度下改性前后催化剂的脱硫活性,以获取具有较高脱硫活性及较低反应温度的还原脱硫催化剂。实验结果表明,催化剂9%La-3%Fe-5%Ce-0.8%Ti/γ-Al2O3在420℃的反应温度下,可去除高达99.3%的SO2,为该技术能够尽快运用于工程实际创造一定条件。

A set of desulfurization equipment for catalytic reduction of simulated flue gas is designed.Ce,Fe and Ti is used as modification agents to modify La/γ-Al2O3 catalyst by following step-by-step impregnation method.In the experiment, the desulfurization activity of catalyst before and after the modification at different reaction temperature is analyzed,so as to obtain the catalyst with high desulfurization activity and a lower reaction temperature.Experimental results show that the catalyst 9% La-3% Fe-5% Ce-0.8% Ti/γ-Al2O3 can remove up to 99.3% of SO2,at 420 ℃ of reaction temperature and this would create certain conditions for applying the technology in engineering practice as soon as possible.